9.5 electron transport and chemiosmosis Building a proton Gradient to Produce ATP

Building a proton Gradient to Proton Gradient to produce ATP

NADH is oxidized when combined with the inner membrane of mitochondria

in prokaryotes, what going on for the proton gradien to produce ATP

in plasma membrane

what molecules that oxisized NADH and FADH2

electron transport chain

whats going on in electron transport chain

electrons move from one molecule to another in the ETC
held more and more tightly

small amount of energy is released in each reaction

each successive bond holds less PE

most are protein with “helper” groups that are readily reduced or oxidized

true

ubiquinone/coenzyme

lipid soluble non protein

what does it mean when they have diffrent ability to accept electrons

redox potential

how is the ETC organized into 4 protein complexed?

Q and cytochrome c transfer electrons between complexes

what happens ate the end of a electron transport chain

low energu electrons are passed to oxygen, along with protons

water is formed

how does the electron transport chain work

energy from redox reaction is used to pump protons from the matriz into the intermembrane space

what does the proton-motive force couples electron transport to?

ATP synthesis

what does ATP synthase consist of two components

1. ATPase “knob”

2. a membrane-bound,proton-transporting base

how do the unitl of ATP synthase occur

units are connected by a shaft , held in place by a stator

F0 tuns as protons flow through it

spinning changes the conformation of F1 units so phosphorylates ADP to from ATP

ATP synthase is enzyme that synthesize ATP

true

what happens when proton move though a proton channel in ATP synthase

chemiosmosis

and proton motive force

chemiosmosis

drives production of ATP from ADP and Pi

proton motive force

atp production iss dependent , generated by proton electochemical gradient

oxidative phosphorylation

energy to produce ATP (proton gradient ,

oxygen as the final electron acceptor provides grates energy yeild how

highly electronegative

large PE reduced electrons donor and water

allows generation large proton -motive force